THE EFFECT OF FUEL PYROLYSIS ON THE COAL PARTICLE COMBUSTION: AN ANALYTICAL INVESTIGATION
作者: Mostafa Baghsheikhi Alireza Rahbari Seyed Mehdi Ashrafizadeh Mehdi Bidabadi
刊名: Thermal Science, 2016, Vol.20 (1)
来源数据库: Society for Thermal Engineers of Serbia
DOI: 10.2298/TSCI140622126B
关键词: analytical modelpyrolysis effectcoal combustiondevolatilization rate
原始语种摘要: The aim of this work is to analytically investigate the symmetrical combustion of an isolated coal particle with the fuel pyrolysis effect. The modelling concept of coal particles is similar to that of the liquid droplet combustion but in the case of coal devolatilization, the particles do not shrink like droplet does due to evaporation of liquid fuel. The rate of devolatilization of volatiles can be calculated using the equation that is similar to Arrhenius equation. This model is based on an assumption of combined quasi-steady and transient behaviour of the process and especially focuses on predicting the variations of temperature profile, radius of pyrolysis and transfer number. It is revealed that the entrance of pyrolysis effect into the governing equations leads to the reduction in...
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关键词翻译
关键词翻译
  • combustion 燃烧
  • pyrolysis 加热分解
  • droplet 液滴
  • radius 半径
  • assumption 假定
  • consequently 因此
  • reduction 减少
  • evaporation 蒸发
  • analytically 分析上
  • effect 效应